[ncl-talk] Error: ESMF to map 10min to 30 sec

[Buzan, Jonathan Robert]

Hi Dennis,

Another option is to use a different program called gdal.  Probably would have to install it. I have found that it works well with large high resolution files. The syntax is a little weird for it, but it does a good job of interpolating the files.

-Jonathan




On Sep 23, 2018, at 9:31 PM, Dennis Shea <shea at ucar.edu<mailto:shea at ucar.edu>> wrote:

Hi Sarah

The Bad:
I think there is an issue with the ESMF regridding. I do not understand it. I may have to open a JIRA ticket.

The Good:
I used linint2_Wrap<http://www.ncl.ucar.edu/Document/Functions/Contributed/linint2_Wrap.shtml> to create the high resolution netCDF4_Classic file. For a 21600 x 43200 grid, linint2_Wrap is VERY slow. However, The values are likely the same or very close to ESMF bilinear regridding.

/glade/work/shea/TEST/SARAH/LININT2/LININT2_HTOPO.USGS-huy3-S1D_21_30sec.nc<http://linint2_htopo.usgs-huy3-s1d_21_30sec.nc/>

More later
D

On Thu, Sep 20, 2018 at 8:37 AM Sarah Bradley - CITG <S.L.Bradley-1 at tudelft.nl<mailto:S.L.Bradley-1 at tudelft.nl>> wrote:
Hello

I am trying to map a 10min global file to a 30 sec grid using the ESMF mapping software

I have attached my ncl script

The error message I receive is:

Copyright (C) 1995-2017 - All Rights Reserved
 University Corporation for Atmospheric Research
 NCAR Command Language Version 6.4.0
 The use of this software is governed by a License Agreement.
 See http://www.ncl.ucar.edu/ for more details.
(0) =====> CPU Elapsed Time: rectilinear_to_SCRIP: 1.408 seconds <=====
ncendef: ncid 196608: NetCDF: One or more variable sizes violate format constraints
fatal:NetCDF: Operation not allowed in define mode: error attempting to write variable (grid_dims) to file (destination_grid_file.nc<http://destination_grid_file.nc/>)
fatal:["Execute.c":8640]:Execute: Error occurred at or near line 1711 in file $NCARG_ROOT/lib/ncarg/nclscripts/esmf/ESMF_regridding.ncl

fatal:["Execute.c":8640]:Execute: Error occurred at or near line 1847 in file $NCARG_ROOT/lib/ncarg/nclscripts/esmf/ESMF_regridding.ncl

fatal:["Execute.c":8640]:Execute: Error occurred at or near line 3910 in file $NCARG_ROOT/lib/ncarg/nclscripts/esmf/ESMF_regridding.ncl

fatal:["Execute.c":8640]:Execute: Error occurred at or near line 4051 in file $NCARG_ROOT/lib/ncarg/nclscripts/esmf/ESMF_regridding.ncl

fatal:["Execute.c":8640]:Execute: Error occurred at or near line 90 in file remap_10min-30sec_ESMF.ncl

I found that as the 30sec file was large, I needed to specify this in the script.

I hope you can help,

Sarah Bradley

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